AMERICAN PHILOSOPHICAL SOCIETY. 583 



Inhabits Pennsylvania. 



Body black, with a slight piceous tinge, polished ; antennse 

 dull [467] yellowish, dusky towards the tip ; mouth dull yellow- 

 ish ; palpi filiform; thorax piceous on the lateral margin, gradu- 

 ally shading to the general blackish color ; elytra on the lateral 

 margin and at tip piceous ; common edge of the tip not indented 

 at the suture ; tergum (in the preserved state) much shorter than 

 the elytra, at tip of the segments dull piceous ; feet honey-yel- 

 low ; tibise not remarkably spiny. 



Length one-twelfth of an inch. 



The abdomen contracts very much in desiccation. 



This can hardly be crasms Grrav., as his description does not 

 indicate it. 



[Considered by Erichson as a Tachmus, but more recently 

 such species have been separated as a distinct genus Coproporus 

 Kraatz. — Lec] 



5. T. OPicus. — Blackish ; feet, base of the thorax and of the 

 elytra obscure reddish-brown. 



Inhabits Missouri. 



Body deep black brown, somewhat sericeous ; head black ; an- 

 tennae at base and tip pale reddish-brown ; palpi pale reddish- 

 brown ; thorax convex ; a narrow, obscure, red brown posterior 

 margin j elytra with a broad red brown basal margin ; feet red 

 brown ; tibiae not remarkably spinous ; tergum with paler margins 

 to the segments, shorter than the elytra, hairy at tip. 



Length over one-tenth of an inch. 



This species is not highly polished, but is distinctly sericeous. 



[Afterwards described as Conurus ciuctuhis Er. — Leg.] 



5. T. ACAUDUS. — Abbreviated ; honey-yellowish ; thorax paler 

 each side. 



Inhabits Indiana. 



Body honey-yellow, polished ; head black piceous ; autennJB 

 fuscous, four basal joints obscure yellowish ; palpi yellowish, 

 last joint acicular; thorax honey-yellowish, more dusky on the 

 disk and at base, and paler, somewhat translucent on the lateral 

 margin ; elytra yellow with a rufous tinge, a little hairy, dusky on 

 the region of the scutel; tip of the suture a little rounded, so as 



18.34.] / 



